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Basic electronic circuit laws, capacitors, resistors, power circuits examples

A basic article on audio cables, electrical wiring, cable lenght, data cables.

An excellent guide on choosing external audio equalizers by K3DAV

LA3ZA Unofficial Guide to Elecraft K2 Modifications

A tutorial on how to setup a receiver capable to decode SSTV signals with a small RaspberryPi version 2 and a RTL-SDR dongle. The author explains how to install the needed software to interface the RTL-SDR and a step by step guide to install the QSSTV software used to decode the signals.

Article based on ROHN engineering specification that will guide on proper guying heights and guy lengths when guying ham radio antenna masts. It will help you determine ahead of time the proper length of guy wires and the distance from the base of the mast to the anchor points

Police scanner buying guide gives you everything you need to buy the best police or radio scanner. Includes, images, helpful links & more.

A practical guide on hombrewing Yagi antennas, including notes on Driven Element, Transformation & Symmetrising Coax Lines, Full Boom length vs. electrical length, Elements & Insulators on Boom and additional tips and tricks, in English and German

A practical guide to program Chinese Radios like Baofeng UB and BF series hanheld trnsceivers

Tips and tricks for succesful soldering. An illustrated guide for beguinners and an usefull reminder for expert in soldering.

The Offshore radio guide, watery wireless websites, history pictures and sounfiles

How N1GY built his ride for Amateur Radio.

Guide to JT65A and JT9 via WSJT-X Software by Andy K3UK

G6LVB beginners guide to receiving the AO-40 beacon

A nice article hosted on amateurradio.com on how to get started with HSMM-Mesh, the High Speed Multimedia-Mesh, from selecting a router to publishing applications

An interesting article dedicated to hams that want to start learning morse code, including notes on Methodology, online training tools, and a guide to Morse Keys

An Easy Guide to UI-View32 and UISS produced by Mineo Wakita, from installing UI-View32, setting up and configuring software and using the UISS

Article descrive the different types including coax and open-wire feeder and waveguide.

A complete guide on using the HF amateur radio bands, and the differences with VHF, using filters, influence of solar weather, the split mode and phonetic alphabets.

This Guide helps you to build the 1:2 BalUn 600 Watts DIY kit step by step. If a delta-loop or quad-loop antenna is powered with a coax cable from the transceiver it is necessary to use a 1:2 BalUn. This 1:2 BalUn uses a symmetrical 1:2 impedance transformer.

An interesting guide about APRS (Automatic Position Reporting System) and to Digipeating through the International Space Station - ISS

Statio evaluation guidelines and rules for correct antenna setup

A compleete guide to program the Tytera MD-380 DMR, installing the TYT software, setting the DMR ID and adding the contacts.

Coax Cable Stripping - How To, a guide to stripping various coax cables

The branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation

Semiconductors, diodes and transistors, intregrated circuits

The page provides information on a simple 50MHz J-Pole Antenna project based on the DK7ZB design. It explains the principle of the Wireman-J-Pole, the feeding process, practical mounting, and simulation results using MMANA GAL. The content aims to guide amateur radio operators in building their own J-Pole antennas for the 6-meter band.

What is a repeater? How do you use repeaters. A great guide to use amateur radio repeaters incuding repeater frequencies, operating procedures and practices.

The _Icom IC-7300_ transceiver, a popular SDR rig, can be readily configured for digital modes like FT8 using _WSJT-X_ software. This guide details the necessary steps, from downloading the correct version of WSJT-X to configuring the radio's USB audio and CAT control settings. It emphasizes a straightforward approach, aiming to simplify the often complex initial setup for new digital mode operators. K0PIR shares his practical experience, outlining the specific menu settings on the IC-7300, such as USB SEND/DPT and USB MOD LEVEL, which are crucial for proper signal modulation and transmission. The resource also covers the integration of WSJT-X's built-in logging capabilities, streamlining the process of recording digital contacts without needing external logging software immediately. This setup allows for efficient operation on various HF bands. Two embedded videos further illustrate the configuration process, providing visual aids for each step, from initial software installation to making the first FT8 contact. The author's method focuses on minimizing common setup hurdles.

A Primer On Mics For Ham Radio. Difference between dynamic and condenser microphones, microphone plugs and differences in kind of microphones available on the market

A guide to choosing the right hardware and a guide on how to install DXSpider on a Raspberry Pi3. This article include a video and a PDF guide about the installation.

This guide explores different radio bands that hobbyists use to talk to each other worldwide. It explains how these bands work and what they're used for. From low-frequency to high-frequency bands, each has its own unique features for people who enjoy communicating through radios

Guide to the Yaseu VX5r, Modes, Memory Banks, Buttons, SET commands, How to save a memory, Tricks and Memory Channel Listing

P4-A narrowband transponder Operating Guidelines and Band Plan, coverage map of the QO100 geostationary amateur radio satellite

About Fusues, current and voltage rating, type of fuses

This quick-start guide is an attempt to provide some help when coming to terms with the R20 and the manual

Article with answers to common questions as what cable types to user, cable length, how to join ends.

LA3ZA Unofficial Guide to Elecraft K2 Modifications

Mini-Operating Guide includes useful hints on Using the HM-133 Microphone, Basic Operation, Operating through a Repeater, Programming a Memory Channel and Assigning a Memory Channel to a Memory Bank

This article presents a comprehensive guide to constructing a multiband vertical wire antenna. The design features parallel wires for various bands, all connected to a single balun, ensuring ease of assembly and adjustment. Materials required include a fishing rod, PVC tubing, and inexpensive wire. The antenna is lightweight, cost-effective, and suitable for field use or as an additional home setup. Detailed instructions and diagrams are provided to facilitate successful construction and optimal performance across multiple frequencies.

Getting Started on the Magic Band is a very exaustive article about operating the six meters band. It covers several aspects of operations, techniques, tips and guidelines on getting started on the six meters band.

Undestanding and measuring SWR, Standing Wave Ratio in antenna feed lines. This article also introduce basic concepts and usage guidelines of amateur radio antenna tuners

Sydney north region scouts and northern sydney girl guides hold a jota camp at narrabeen australia where they use amateur radio and computers to communicate with other scouts and guides around the world.

The ARRL's End-Fed Half-Wave (EFHW) Antenna Kit is an easy-to-build four-band antenna designed for 10, 15, 20, and 40 meters. Ideal for portable operations, it includes a 49:1 impedance transformer for compatibility with most transceivers. This project, detailed with step-by-step assembly instructions, involves creating a weatherproof enclosure and impedance matching network. The kit simplifies HF operations and supports multiple configurations, making it a versatile tool for amateur radio opertors.

The Icom IC-7300 is a popular SDR transceiver known for its excellent performance in ham bands. However, users have reported issues with reception reliability outside these bands due to ADC aliasing. This phenomenon occurs when the sampling rate of the radio interacts with frequencies outside the intended range, leading to unwanted signals being received. For instance, when tuned between 30 to 36 MHz, users may inadvertently pick up WFM broadcast signals or PMR communications due to aliasing effects. This guide outlines modifications to improve the IC-7300's performance by addressing the low-pass filter design, which is crucial for reducing interference from these unwanted signals. The proposed modifications involve adjusting the low-pass filter on the PA unit to better attenuate frequencies that cause aliasing. Measurements indicate that the original filter design allows significant signal leakage, leading to false receptions. By implementing the suggested changes, users can achieve a notable reduction in unwanted signals, enhancing the overall functionality of the IC-7300. While the modification requires careful soldering, the benefits in performance make it a worthwhile endeavor for serious operators looking to optimize their SDR experience.

F5NPV explores the construction of a cost-effective 1KW dummy load for radio enthusiasts. Purchasing a commercial dummy load can be expensive, but with basic materials such as a metal can, resistors, mineral oil, and a heat dissipator, you can build your own. The article provides a simple guide to assembling the load, including the importance of testing for inductance. The DIY dummy load yields impressive performance, with an SWR of 1.2:1 across multiple bands and the ability to handle up to 1KW of power. This budget-friendly solution is a valuable addition to any radio shack.

A document that will guide you on Coaxial-Cable trap optimization process to gain on global antenna performance and on increasing effective bandwidth.

A light portable 2 element Delta beam antenna for 14 MHz. It is basically a two element delta loop wire antenna made for portable usage providing good directivity and a 4.2 dBd gain

This detailed guide provides step-by-step instructions on setting up a HamClock for your shack using a Raspberry Pi and the HamClock 4.21 software. It includes recommendations for hardware such as Raspberry Pi models, SD cards, PSUs, and displays. The guide covers installation, setup, configuration, and suggestions for customizing the default settings. Whether you are a beginner or experienced ham radio operator, this guide will help you create a functional HamClock for your shack with ease.

How to send and receive QSL cards at RSGB